From patchwork Wed Sep 30 09:14:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 11808521 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 08B64618 for ; Wed, 30 Sep 2020 09:14:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D7FF82076B for ; Wed, 30 Sep 2020 09:14:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="CBQ9P5Si" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729231AbgI3JOs (ORCPT ); Wed, 30 Sep 2020 05:14:48 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:35202 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729178AbgI3JOm (ORCPT ); Wed, 30 Sep 2020 05:14:42 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 08U9EcHp035112; Wed, 30 Sep 2020 04:14:38 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1601457278; bh=r6BZcfFspKekPk2CsVfLnHhDTFjI4u11uU/6NZJdVNU=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=CBQ9P5SiEzy0dcX4PJlIBgutt2z55EpzRhTyLcms2dWr3JLZGLb7ISDOMupMQ0Mpz JOuon+dme+rPUNTGYiLUQpiu9IQXXj6iY0pSheclceNaqLnGlCe6ggpl5rzUqfhumz 5VSOWaijk4BzjJYEvGqcn8ZKsJH4cp8rE4kkssHc= Received: from DLEE106.ent.ti.com (dlee106.ent.ti.com [157.170.170.36]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 08U9EcHJ100066 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 30 Sep 2020 04:14:38 -0500 Received: from DLEE106.ent.ti.com (157.170.170.36) by DLEE106.ent.ti.com (157.170.170.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Wed, 30 Sep 2020 04:14:37 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DLEE106.ent.ti.com (157.170.170.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Wed, 30 Sep 2020 04:14:37 -0500 Received: from feketebors.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 08U9DuJk116385; Wed, 30 Sep 2020 04:14:35 -0500 From: Peter Ujfalusi To: , , , , CC: , , , , , , Subject: [PATCH 13/18] dmaengine: ti: Add support for k3 event routers Date: Wed, 30 Sep 2020 12:14:07 +0300 Message-ID: <20200930091412.8020-14-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200930091412.8020-1-peter.ujfalusi@ti.com> References: <20200930091412.8020-1-peter.ujfalusi@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org In k3 architecture a DMA channel (in TR momde) can be triggered by global events, origination from different modules. The events for triggers can be sent from any module which is connected to PSI-L fabric, but the event number to be sent is DMA channel specific, it is only known after the channel itself is requested. The router operation needs to be split up: - route_allocate: configure the dma_spec for the DMA and store the configuration which is needed for the router's input - set_event: callback used by the DMA driver to set the event number for the channel and enable the routing Signed-off-by: Peter Ujfalusi --- include/linux/dma/k3-event-router.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 include/linux/dma/k3-event-router.h diff --git a/include/linux/dma/k3-event-router.h b/include/linux/dma/k3-event-router.h new file mode 100644 index 000000000000..e3f88b2f87be --- /dev/null +++ b/include/linux/dma/k3-event-router.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com + */ + +#ifndef K3_EVENT_ROUTER_ +#define K3_EVENT_ROUTER_ + +#include + +struct k3_event_route_data { + void *priv; + int (*set_event)(void *priv, u32 event); +}; + +#endif /* K3_EVENT_ROUTER_ */